Open Access Journal

ISSN : 2456-1290 (Online)

International Journal of Engineering Research in Computer Science and Engineering (IJERCSE)

Monthly Journal for Computer Science and Engineering

Open Access Journal

International Journal of Engineering Research in Mechanical and Civil Engineering (IJERMCE)

Monthly Journal for Mechanical and Civil Engineering

ISSN : 2456-1290 (Online)

Application of AE Based Mathematical Procedure for Identification of Corrosion in Reinforced Concrete Element

Author : Nayantara Prakash Ghodake 1 2

Date of Publication :24th January 2018

Abstract: Corrosion is a major cause of degradation of reinforced concrete (RC) structures. Corrosion of steel rebar in concrete is an electrochemical process and it has been widely studied using various non-destructive techniques such as Half-cell potential, linear polarization resistance, electrochemical impedance spectroscopy etc. All these techniques cannot be called truly non-destructive technique as the instruments require physical and electrical contact with steel embedded in concrete. To overcome this difficulty, the research for finding the applicability of other non-destructive techniques such as ultrasonic pulse velocity, acoustic emission (AE) technique etc. for quantification of corrosion is going on. From the literature, it is found that AE technique is a powerful technique for identification as well as quantification of corrosion without having any physical or electrical contact with the reinforced steel. For corrosion quantification AE based mathematical model has been developed which can quantify the corrosion in small-scale cylindrical RC specimens. Thus for commercial use of the developed mathematical model, it is necessary to check its applicability for the changed geometry of specimens. The present paper focuses on checking the applicability of developed mathematical model for a rectangular geometry of specimens. For the experimental work, RC slabs of dimensions 500 mm x 300 mm x 60 mm with single reinforcing steel bar were cast and subjected to accelerated corrosion. From the experimental results, it was found that the predicted mass loss values of corroded rebar using developed mathematical model are in agreement with that of the actual mass loss which indicated that AE based mathematical model can be successfully used for rectangular specimens

Reference :

    1. Song H. and Saraswathy V.,(2007), corrosion monitoring of Reinforced Concrete structuresA Review. Int.J.Electrochemical sci., Vol.2, 1- 28.
    2. Gadve s., Mukherjee, A. and Malhotra S.N., (2009), Corrosion of steel reinforcements in FRP wrapped concrete. Construction and Building Materials,23,153-161.
    3. Shilpa Patil, Shweta Goyal, and Bilavari Karkare Acoustic emission-based mathematical procedure for quantification of rebar corrosion in reinforced concrete Current Science, Vol. 109, No. 5, 10 September 2015.
    4. on
    5. P. Rossi, ―The Use Of Acoustic Emission In Fracture Mechanics Applied To Concrete‖, Engineering Fracture Mechanics Vol. 35, No. 415, pp. 751-763, 1990 6. http://http: // www. epandt. Com /us /produits _ea _us. html
    6. Miinshion Huang, Liang Jiang, Peter K Liaw, Charlie R Brooks, Rodger Seeley and Dwaine L.Klarstrom – Using Aoustic Emission in Fatigue and Fracture Materials Research, JOM Vol.50,No.11 November 1998.
    7. Shilpa Patil , Bilavari Karkare , Shweta Goyal -Acoustic emission vis-à-vis electrochemical techniques for corrosion monitoring of reinforced concrete element- Construction and Building Materials 68 (2014) 326–332

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